I read that the electric hook ups are all 50. Is that 20 and 30 or a straight 50 ? I have a travel trailer that needs 30. I do not like using an adapter for a long period of time.

They have both 30 and 50 at all sites that I am aware of. I stay there regularly.

15,30,50 on all sites. Don't worry bout using the adapter it won't hurt anything

Most if not all of the sites have separate outlets for 4 prong 50 amps and 3 prong 30 amps and usually have the standard 15 amp outlet as well.

I'm not 100% sure